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Finding the Fourth Proportional to 38,361.60, 57,530.88 and 19,883.52

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Solution

The fourth proportional to 38,361.60, 57,530.88 and 19,883.52 is: 29,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,361.60 : 57,530.88 = 19,883.52 : x
  2. Step 2: Convert to fraction form
    38,361.60/57,530.88 = 19,883.52/x
  3. Step 3: Cross multiply
    38,361.60x = 57,530.88 × 19,883.52
  4. Step 4: Simplify right side
    38,361.60x = 1,143,916,403.10
  5. Step 5: Solve for x
    x = 1,143,916,403.10/38,361.60
  6. Step 6: Final answer
    x = 29,819.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.